Yes it is true that primary producitivity varies from ecosystem to ecosystem because it depends on the plant species inhabiting the area and their photosyntheti activity.
An ecosystem is a region where a bubble of life is created by plants, animals, and other organisms interacting with the weather, environment, and other factors. Ecosystems are made up of both biotic (life) and abiotic (nonliving) components.
Leaf area development, photosynthetic activity, and source-sink ratio responses are considered to be the three main determinants of photosynthetic activity. Different growth habits in ecosystem are on leaf number and blade size are identified as a result of leaf area development in response to stress.
Temperature, carbon dioxide content, and light intensity are the key variables influencing photosynthetic activity.
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which effect is most likely caused by nondisjunction during meiosis?
Because of maternal nondisjunction during meiosis I, down syndrome develops. An egg cell with an additional copy of chromosome 21 is created.
When chromosomes are not correctly divided during cell division, nondisjunction occurs. Cells end up with an unbalanced number of chromosomes as a result.
The DNA of the cell, which is essential for both its activities and reproduction, is found in chromosomes. Chromosomes typically arrange themselves in a neat row near the cell's centre during cell division. The chromosomes are then divided as the cell divides into two distinct cells. Because of maternal nondisjunction during meiosis I, down syndrome develops. An egg cell with an additional copy of chromosome 21 is created. This demonstrates that chromosome 21 is present in the resultant embryo in three copies—two from the mother and one from the father.
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Evolution assessment- Which data best supports your claim? Why are these data important to scientists in determining common ancestery
Scientists use various types of data to determine common ancestry, including anatomical, molecular, and fossil evidence
. Anatomical evidence involves comparing the physical structures of different species, while molecular evidence involves analyzing DNA or protein sequences to determine genetic relationships between species. Fossil evidence involves examining the physical remains of ancient organisms to determine their relationships to present-day species.
What is Evolution?All of the above types of data are important to scientists in determining common ancestry because they provide different perspectives and information on the evolutionary history of a particular group of organisms. For example, molecular data can reveal genetic relationships that may not be evident from anatomical or fossil evidence.
Fossil evidence can provide a record of the physical changes that occurred over time, while anatomical evidence can help identify homologous structures and reveal evolutionary relationships.
Therefore, By combining multiple types of data, scientists can construct a more complete picture of the evolutionary history of a group of organisms and make more accurate inferences about common ancestry.
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What is the order of amino acids in a protein produced by your body?
(A) the order of nucleotide bases inside a gene determines the sequence of amino acids in a protein.
What factors influence the order and identity of proteins?The ordered collection of amino acids that defines all of a protein's features is how it receives its identity. A polypeptide chain is made up of amino acids linked together by peptide bonds. The polypeptide chain is made up of an amino acid sequence determined by the gene.
Protein structure is classified into four levels: primary, secondary, tertiary, and quaternary. To completely comprehend how a protein operates, it is beneficial to grasp the nature and function of each level of protein structure.
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Which part of a green plant loses the most chloroplasts at the end of
ummer?
OA. Leaf
OB. Root
O C. Stem
OD. Seed
Answer:
A. Leaf
Explanation:
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What is the difference between a pulmonary nodule and a lung nodule?
Difference : A nodule is the term used to describe a tumor that is three centimeters in diameter or smaller. A pulmonary nodule is a nodule that develops in your lungs. The most frequent variety of benign lung nodules are hamartomas.
Masses are tumors that are typically three centimeters (1.2 inches) in diameter or greater. An unnatural growth that develops in the lung is called a lung (pulmonary) nodule. There could be one or more nodules on your lungs.
One lung or both may develop nodules. Typically, benign lung nodules exist (not cancerous). Small cell clusters called lung nodules are found in the lungs. These are very typical. The majority of pulmonary nodules are scar tissue from prior lung infections. No symptoms are often present with lung nodules.
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Fill The Blank?the enzyme the glues the dna fragments together is_______
The enzyme that glues the DNA fragments together is DNA ligase.
A DNA-joining enzyme is called DNA ligase. Ligase can join two sections of DNA that have identical ends together to create a single, uninterrupted DNA molecule. DNA ligase fills in the space left between the molecules in order to create a single piece of DNA. These small fragments of DNA are called as okazaki fragments.
In eukaryotes, okazaki fragments are brief sequences of DNA nucleotides that are synthesised intermittently and later joined by the enzyme DNA ligase to form the lagging strand during DNA replication. They are roughly 150–200 base pairs long.
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3. What term describes the place where an animal lives?
ecosystem
environment
niche
habitat
Answer:
Niche
Explanation:
The specific physical location where a particular organism lives or is adapted to live in a community. Ecological Niche: An organism's role or occupation within a community.
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Which of these structural diagrams represents a polymer?
An arrangement of amino acids joined chemically by peptide bonds is referred to as a polypeptide chain. Option (a). represents the polymoer.
What is polypeptide chain?An unbroken, continuous sequence of amino acids connected by peptide bonds is referred to as a polypeptide. The peptide bond joins the carboxyl group of one amino acid to the amine group of the following amino acid to produce an amide.
Backbone models make it easiest to see the chain structures of proteins. A peptide is a brief protein made up of 50 amino acids or less. These amino acids are arranged in a long sequence and joined to one another by covalent peptide bonds to form proteins (Figure 3-1). Polypeptides are another name for proteins.
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the presence of abundant______ fibers in the walls of elastic arteries allows them to stretch and withstand the strong pulsations of blood as it is ejected from the heart.
The presence of abundant elastic fibers in the walls of elastic arteries allows them to stretch and withstand the strong pulsations of blood as it is ejected from the heart.
Elastic fibers are made up of the protein elastin and are highly elastic, meaning they can stretch and then recoil back to their original shape When the heart contracts and ejects blood into the arteries, the elastic fibers in the arterial walls stretch to accommodate the surge of blood flow. As the elastic fibers stretch, they store potential energy, which is then released as the heart relaxes and the arterial walls recoil back to their original shape, helping to propel blood forward.
This ability to stretch and recoil allows elastic arteries to maintain a consistent blood pressure and flow even during the strong pulsations of blood ejected from the heart. Without elastic fibers, the arterial walls would be unable to withstand the pressure of the blood flow, and blood pressure would fluctuate greatly with each heartbeat.
Overall, the presence of abundant elastic fibers in the walls of elastic arteries allows them to stretch and recoil, enabling them to accommodate the pulsations of blood ejected from the heart and maintain a consistent blood pressure and flow throughout the circulatory system.
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the fluid mosaic model of membrane structure suggests that membranes are__
The fluid mosaic model depicts the cell membrane as a tapestry of continually moving molecules (phospholipids, cholesterols, and proteins). This movement assists the cell membrane in maintaining its function as a barrier between the inner and outside surroundings of the cell.
The fluid mosaic model explains the plasma membrane's structure as a mosaic of components, including phospholipids, cholesterol, proteins, and carbohydrates, that give the membrane its fluid nature.
Membrane proteins and phospholipids may move about in the membrane because it is fluid - the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads towards the aqueous environment inside and outside of the cell and their hydrophobic tails grouped in the core.
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The embroyblast eventually differentiates into theO zygote. O blastocyst O primary germ layers. O sperm and egg
The embroyblast eventually differentiates into the C. primary germ layers
Fertilization is the process of fusing sperm cells and ovum cells which then become a zygote. Sperm entering the uterus will meet with the ovum assisted by uterine wall contractions which when fused will form a diploid zygote nucleus.The zygote will grow into an embryo in the uterus after fertilization which then develops into a blastocyst.
Emberioblast is the inner part that is formed from the differentiation of the blastocyst. Emberiolblast will also undergo differentiation into a primary germ layer consisting of exothermic and endothermic. Exothermic is the layer that will become the outer surface of organisms such as skin and hair. While endotherms are the forerunners of the inner layer that will form the digestive tract, liver or lungs.
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is known as the pleural cavity and normally contains a small amount of pleural fluid.
Interpleural space is known as the pleural cavity and normally contains a small amount of pleural fluid.
The pleural cavity, pleural space, or interpleural space is the potential space between the pleurae that surround each lung in the pleural sac. A little quantity of serous pleural fluid is kept in the pleural cavity to lubricate the membranes and to establish a pressure gradient.
The visceral pleura is the serous membrane that covers the surface of the lung and is separated from the outer membrane, the parietal pleura, by just a film of pleural fluid in the pleural cavity. The visceral pleura runs parallel to the lung fissures and the root of the lung structures. The parietal pleura is connected to the mediastinum, the diaphragm's upper surface, and the interior of the ribcage.
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where can the other planets in our solar system generally be found on the sky?
The "planet " is the occurrence of Mercury, Venus, Mars, Jupiter, and Saturn being visible to the unaided eye from Earth.
How do you locate additional planets in the sky?Sky watchers can readily view planets with just a modest or medium-sized telescope. How much of our solar system is visible will wow you! Additionally, you don't need a completely dark sky to see all of the planets in our solar system; a telescope can still make Venus, Mars, Jupiter, and Saturn easily visible even when viewed in a city.
What planet is there in our solar system?The Sun, our star, and everything gravitationally connected to it, including the moons, planets, and dwarf planets like Pluto, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, make up our solar system.
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Went's experiment differed from all previous plant tropism experiments by A. determining the chemical properties and structure of a hormone that influences plant growth. B. demonstrating that plants respond to indirect light by growing toward the light. C. isolating a plant hormone from one plant and using it to change growth patterns in a different plant. D. showing that the coleoptile portion of a plant is essential in responding to light signals.
The coleoptile is stimulated by light to create a diffusible material that travels to the growth area of a plant and encourages cell elongation there.
What role do cells play in the body?In addition to absorbing nutrients from meals and converting those nutrients into energy, they also provide the body structure and perform certain tasks. Additionally, cells may replicate themselves and hold the genetic material of the organism. Each component of a cell performs a distinct purpose.
How does a cell become alive?DNA. The double-stranded DNA genome, which contains the necessary information for life, is organised into one or maybe more chromosomes in every cell. Information included in this DNA is utilized to control reproduction, food intake, responses to environmental cues, and any other conventional functions.
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Continuous capillaries are the most common capillaries in the body.
a. True
b. False
which part of the brain is necessary for the production of smooth and coordinated movements?
The production of smooth and coordinated movements involves the integration of several brain regions, but the cerebellum is a critical structure that plays a central role in this process.
The cerebellum is located at the base of the brain, beneath the cerebrum, and it has connections to other parts of the brain, including the cerebral cortex, brainstem, and spinal cord.
The cerebellum receives sensory information from the body, including signals related to muscle tone, joint position, and balance, and uses this information to help plan and execute movements. It also compares the intended movement with the actual movement and makes adjustments as needed to ensure that the movement is smooth and coordinated.
Damage to the cerebellum can result in ataxia, a condition characterized by uncoordinated and movements. Ataxia can affect walking, balance, speech, and eye movements. People with cerebellar damage may also have difficulty with fine motor skills, such as writing or buttoning a shirt.
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Inflamed and swollen tendons caught in the narrow space between the bones within the shoulder joint cause the condition known as intermittent claudicationrotator cuff tendinitiscarpal tunnel syndromeimpingement syndromeItem 1 are called?
The rotator cuff tendons and subacromial bursa become compressed in the small space beneath the acromion, resulting in shoulder impingement syndrome. As a result, the bursa and tendons swell and become inflamed.
What is the impingement syndrome in shoulder joint?When you elevate your arm, a tendon (band of tissue) inside your shoulder scrapes or catches on neighbouring tissue and bone, resulting in shoulder impingement.
The tendon that connects the muscles surrounding your shoulder joint to the top of your arm—the rotator cuff tendon—is impacted.
The rotator cuff and/or biceps tendon in your shoulder might become inflamed, which is known as tendonitis. It normally happens as a result of nearby structures pinching your tendon.
Playing certain sports that repeatedly demand the arm to be moved over the head might cause shoulder tendinitis.
Therefore, claudication rotator cuff tendinitis carpal tunnel syndrome impingement syndrome Item 1 is called impingement syndrome.
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If your cell contained three pairs of homologues (n=3, 2n=6), how many possible configurations would there be?.
During meiosis, homologous chromosomes can assort in different ways to create genetically diverse gametes.
The number of possible chromosomal configurations that can arise during meiosis is determined by the number of homologous chromosome pairs in the cell.
In this case, the cell contains three pairs of homologs, or six total chromosomes (2n = 6). The number of possible chromosomal configurations can be determined using the formula 2^n, where n is the number of chromosome pairs.
So, for a cell with three pairs of homologs, there are 2^3 or 8 possible chromosomal configurations. These configurations arise from the random assortment of homologous chromosomes during meiosis.
The number of possible chromosomal configurations can have a significant impact on the genetic diversity of the offspring produced by sexual reproduction. The greater the number of chromosome pairs, the larger the number of possible configurations, and the greater the potential for genetic diversity.
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What is the most likely cause of postmenopausal bleeding?
Polyps in the cervix or womb are growths that are typically not malignant. Bleeding after menopause may indicate endometrial cancer, a type of uterine cancer.
The most frequent reasons are endometrial atrophy, which is brought on by low oestrogen levels, and inflammation and weakening of the uterine lining (atrophic vaginitis). Other factors include uterine or cervical infections, Postmenopausal bleeding can be brought on by some drugs, such as blood thinners, and other cancers.
Most frequently, conditions including endometrial atrophy (a weakening of the uterine lining), vaginal atrophy, fibroids, or endometrial polyps are to blame for postmenopausal bleeding. In rare instances, the bleeding may potentially be an indication of endometrial cancer, a uterine lining cancer.
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Saturn takes 29.5 Earth-years to revolve around the Sun. In one century (100 years), both Saturn and Earth will complete several revolutions of the Sun. Which of the following correctly compares the number of revolutions that the two planets will complete?
A. Saturn will complete about 97 more revolutions than Earth.
B. Earth will complete about 97 more revolutions than Saturn.
C. Saturn will complete about three more revolutions than Earth.
D. Earth will complete about three more revolutions than Saturn.
It is accurate to say that Earth will make 97 more revolutions than Saturn in a century when comparing the two planets' total number of revolutions.
Saturn orbits the Sun in what way?Saturn has a normal orbit, meaning that it moves around the Sun in the same prograde direction as the Sun and has a minor eccentricity (noncircularity) and inclination to the ecliptic, the plane of Earth's orbit, like Jupiter and most of the other planets.
Why does Saturn spin so quickly?The equator at the level of the atmosphere must spin roughly 400 kilometers per hour faster than the Voyager measurement suggested because Saturn is so large. Since scientists gauge wind speeds in relation to the planet's rotation, the new rotational speed changes by the same margin as the anticipated wind speeds.
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Two motorboats are traveling down a river. Motorboat 1 has a mass of 6,000 kg, and motorboat 2 has a mass of 1,500 kg. The graph below shows the kinetic energies of the boats as they gain speed.
If both boats gain speed at the same rate, why does motorboat 1 have more kinetic energy?
A. It encounters more air resistance.
B. It has more mass.
C. It sits up higher in the water.
D. Its length is greater.
The motorboat 1 has more mass than motorboat 2 thus, option B is correct.
What is kinetic energy?Work needed to accelerate the body of given mass from rest to stated velocity, is called as kinetic energy. Kinetic energy is measured in joule.
The kinetic energy of non-rotating object depends on the mass of the body as well as its speed. The kinetic energy is equal to 1/2 the product of the mass and the square of the speed. In formula form:
[tex]{\displaystyle E_{\text{k}}={\frac {1}{2}}mv^{2}}[/tex]
Therefore, when two motorboats are traveling down a river one with mass 6000 and other with 1500, both boats gain speed at the same rate but motorboat 1 have more kinetic energy. Hence, option B is correct.
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The question is incomplete, but most probably the complete question is,
What are the female parts of plant?
The term "pistil" refers to all of the feminine parts. The sticky, pollen-receptive area on top of the pistil is known as the stigma.
The style is the narrow region between the ovary and the pistil, which is where it is found. Flowers are not only beautiful, but they are also essential to the development of seeds. Flowers are made up of a few basic elements. The feminine part is the pistil. The pistil, which is frequently located in the centre of the flower, is made up of the stigma, style, and ovary.
The clinging knob on the top of the pistil is the stigma. It is connected to the style, a protracted construction that resembles a tube. a tube that forms after pollen meets the stigma during fertilisation and extends down the style and into the ovary. Male reproductive cells that go down the tube and join with the ovule fertilise it. The fertilised ovule grows into the seed, while the ovary matures into the fruit.
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being a heterotroph means ________.
Being a heterotroph means consumers that an organism is unable to produce its own food and must obtain nutrients and energy by consuming organic matter produced by other organisms.
Heterotrophs are also known as consumers because they consume other living or once-living organisms in order to obtain the organic molecules necessary for their survival and growth.
Most animals, fungi, and many bacteria are heterotrophs, as they obtain their energy and nutrients by consuming other organisms. In contrast, autotrophs are able to produce their own food through photosynthesis or chemosynthesis, using energy from sunlight or from inorganic chemical reactions to convert simple substances into organic molecules that can be used for growth and metabolism. Plants, algae, and some bacteria are autotrophs.
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Which statement is the best summary of the model?
Chloroplast
Intermembrane B
A Space
Outer Membrane
Granum
(Stack of Thylakoids)
Thylakoid
Light
Dependent
Reactions
C
EX
D
F
Calvin
Cycle
G
Inner Membrane
Stroma
(Fluid)
The appropriate statement to sum up the paradigm is Option B, which states that light energy is turned into chemical energy that is stored in plants. Therefore, the correct option is B.
What is a chloroplast?An essential component of photosynthesis is the chloroplast, an organelle found in plant cells. It transforms light energy into chemical energy, which is what supports earth's plant life.
The chloroplast's structure is seen in the figure shows:
The inner membrane, outer membrane, stroma, granum, etc. make up the chloroplast.The thylakoid discs of the chloroplast are where the cell's light responses take place.Granum is the name given to the collection of these thylakoid discs.The chloroplast also has a Calvin cycle.Animal cells do not have a chloroplast, which marks a significant distinction between plant and animal cells. Therefore, the correct option is B.
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The question is incomplete, but most probably the complete question is,
Which statement is the best summary of the model?
The bombardier beetle released a chemical from their abdomen in what kind of reaction? A. Exothermic B. Explosive C. Endothermic D. Biodegradable
When confronted with danger, bombardier beetles combine two compounds in their abdomen, setting off a ferocious exothermic process that emits heat (option a).
What is exothermic behavior?Exothermic chemical reactions are those that release energy. When bonds are broken in the reactants during exothermic reactions, more energy is released when bonds are formed in the products. The reaction mixture's temperature rises as a result of exothermic reactions.
what are the exothermic and endothermic types?Endothermic chemical reactions are those in which the reactants take in heat energy from the environment to create products. An exothermic reaction is one in which heat or light are released as forms of energy. Energy from the environment is taken up by the reaction.
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True/False: the morphological species concept states that different species cannot reproduce together and produce viable offspring.
True : the morphological species concept states that different species cannot reproduce together and produce viable offspring.
What is implied by the notion of morphological species?In some ways, the "morphological species notion" is more useful. It defines species as groups of people that share physical characteristics and differ from other groups of similar individuals.
According to the biological species idea, species are defined as groups of organisms or populations that are reproductively separated from other populations but whose members can interbreed and produce viable offspring. According to the idea of morphological species, species are distinguished by specific morphological traits.
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What delivers oxygenated blood to the body's cells?
The heart, specifically the arteries, delivers oxygenated blood to the body's cells.
The heart is a muscular organ that pumps blood throughout the body, delivering oxygen and nutrients to the cells and tissues and carrying away waste products.
The heart has four chambers, consisting of two atria and two ventricles, that work together to create a coordinated sequence of contractions and relaxations that propel blood through the circulatory system.
The right side of the heart pumps deoxygenated blood to the lungs, where it picks up oxygen and releases carbon dioxide, while the left side of the heart pumps oxygenated blood to the rest of the body. The heart is a vital organ that plays a critical role in maintaining the health and function of all the body's other organs and systems.
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The outer layer of tissue in a blastocyst, called the endoderm, eventually develops into the digestive system organs, including the liver and intestines. What is this an example of?
A: Cell differentiation
B: Cell division
C: This process would use neither cell division nor cell differentiation.
D: This process would use both cell division and differentiation.
Cell differentiation can be seen in the endoderm, the outer layer of tissue in a blastocyst that eventually gives rise to the digestive system's organs like the liver and intestines.
What sort of cell might be an endoderm?The endoderm develops the gut tube and its derived organs, including the cecum, intestine, stomach, thymus, liver, pancreas, lungs, thyroid and prostate.
What finally develops from the blastocyst's outer layer of cells?These outer cells eventually give rise to the foetus. The inner layer of cells of the blastocyst implants more deeply in their endometrium. These cells mature into the placenta, which feeds and oxygenates the developing foetus. A fraction of the placental cells form the amniotic sac.
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Part 1 (1 point)
See Hint
Carbohydrates on the surface of leukocytes play an important role in responding to infection or inflammation. Place the following steps of the response in the correct order. Question List (5 items)
⢠Endothelial cells express selectins on their plasma membrane.
⢠Selectins bind to carbohydrates on the surface of leukocytes, causing them to stick.
⢠Leukocytes crawl out of vessel into adjacent tissue.
⢠Leukocytes roll along vessel walls.
⢠Cytokines are released at sites of infection or inflammation and stimulate endothelial cells of blood vessels.
First event to last event
The correct order of responses from leukocytes against an infection or inflammation is option E>A>B>D>C, as first of all cytokines are released at the surface of the infection and lastly, leukocytes crawl out of the site into the adjacent tissue.
A reaction, like redness, swelling, fever, etc. are all inflammatory responses. Such responses are triggered by the chemicals released at the site of infection called cytokines or histamines. These chemicals interact with the adjacent cells and mediate the inflammatory response. These chemicals, hence, attract leukocytes at the site of infection and make them fight against the pathogen and resist it. Steps of the response in the correct order are as follows:
1. Cytokines get released at sites of infection and regulate endothelial cells of blood vessels.
2. Endothelial cells promote selectins on their plasma membrane.
3. Selectins bind to carbohydrates on the surface of leukocytes
4. Leukocytes roll along vessel walls.
5. Leukocytes now enter into adjacent tissue.
Thus, the correct order is option E>A>B>D>C.
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Select the components of the plasma membrane as described by the fluid-mosaic model.
1. water
2. nucleic acids
3. proteins
4. cholesterol
5. phospholipids
The components of the plasma membrane as described by the fluid-mosaic model are 3. proteins, 4. cholesterol and 5. phospholipids.
The fluid mosaic model of the plasma membrane describes the plasma membrane as a fluid aggregate of phospholipids, LDL cholesterol, and proteins. Fluid mosaic model of the plasma membrane become proposed via way of means of Singer and Nicolson. According to this version, the plasma membrane is a phospholipid bilayer wherein the proteins, ldl cholesterol and carbohydrates are integrated which offer it a mosaic-like appearance. Cell-membrane become defined via way of means of the “fluid mosaic version". It describes the mobileular membrane as a two-dimensional liquid that restricts the lateral diffusion of the membrane components.
Thus, correct options are 3,4 and 5.
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